Gas burner



June 20, 1933. E s FEDEL r AL 1,914,772

GAS BURNER Filed July 5, 1932 3 Sheets-Sheet 1 Ell b 52 /a 7/ Y 1 5 Inventors E 5 F9 aZe/ \D 2077a,

flllorney June 20, 1933. E. s. FEDEL ET AL GAS BURNER Filed July 5, 1952 S SheetS-Sheet 2 June 20, 1933. E. s. FEDEL El AL GAS BURNER Filed July 5, 1932 3 Sheets-Sheet 3 if Invenlorg A 2956/ J. P077191 Bpfi i in Patented June 2 19315 barren STATES PTE ECE ERNEST S. FEDEL AND DANIEL D. POTTER, ROCK SPRINGS, WYOMING GAS BURNER Application filed July 5, 1932.

This invention relates to an improved gas burner especially designed for efficiency and sensitivity of operation.

Our principal aim is to generally improve upon prior patented and marketed typesof gas burners by providing a structure whlch is specifically constructed to promote low consumption of gas and developing an 1n tensely hot flame and to otherwise accomplish the desired results of a structure of this type in a more dependable and gratifying manner.

One feature of construction is predicated upon the provision of av more satisfactory type of base including a main gas supply manifold having communication with a plurality of superposed hot air conducting passages specifically arranged to acquire appropriate mixing of air and gas at the fuel delivery end of the assembly of burners per se.

An outstanding feature of construction is found in the use of a base of the aforesaid type operating in conjunction with a unique air pre-heating unit supported on the base within the vicinity of the flame jet ends of the burners in order to permit said units to be satisfactorily heated for heating the fuel forming air which is circulated therethrough.

Other structural and advantageous features of the invention will become more readily apparent from the following description and drawings.

In the drawings:

Figure 1 is a view in section and elevation 5 showing the complete ensemble as developed in accordance with. the principles of the pres ent invention.

Figure 2 is a central, vertical sectional view through the structure shown in Figure 1. I Figure 3 is a top plan view of the base with the pre-ignition air heating unit removed, and with portions of the base broken away and shown in section.

Figure 4 is a detail View taken approximately on the plane of the line 44 of Figure 3.

The base comprises a metallic casting which in top plan view is of general U-shaped configuration. The portions thereof are substantially rectangular in cross sectional shape and Serial N 0. 620,946.

the presence of a horizontal partition 5 serves to form gas delivery ducts 6 of general L- shaped form separated from one another by a vertical divider 7.

The partition 5 also defines the heated air delivery passage 8. The numerals 9, 10, and 11 designate tubular distributing branches which serve to distribute the heated air uniformly into the respective portions of the air duct 8 with which they communicate. The numerals 12 designate simple V-shaped deflectors located in these tubular branches.

The numerals 13 designate elbows connected to opposed portions of the gas ducts for supplying thereto. Suitable supply pipes (not shown) are attached to these gas intake elbows 13.

The numerals 14 designate the valved cold air intake manifold, which is attached to the branches 9, 10 and 11 as shown in Figure 7 2 of the drawings. The numeral 15 desig nates a coupling or connection for an air delivery pipe (not shown) which pipe is adapted to lead through an adjacent wall in the building for communication with the outside atmosphere.

-The air passing through this connection is regulated by a suitable valve or damper 16. Additional inside air, that is, air from the cellar is allowed to enter the open left-hand end 17 of the manifold, said air being controlled by a similar damper or valve 18.

Referring further to Figure 2, it will be observed that at the inner end of the air supply manifold 14: we provide a division wall 19 located between a pair of upstanding nipples 20 and 21 whose upper ends at 22 are tapered to fit into correspondingly shaped holes in the bottom wall of the air preheater unit 28.

The nipple 20 located to the left of the divider 19 serves to introduce the cold air into the heater unit, and the nipple 21 serves to convey the heated air from said unit into the air ducts or passages 8.

The unit 23 comprises a box-like casing 24 having a removable cover 25 and provided with a plurality of air circulating and heat generating lines 26. On its interior the cas- 100 ing is provided with an internal wall 27 which defines the cold air intake compartment 28 and the heated air discharge or exit compartment 29. The holes in the bottom wall of the casing are located on opposite sides of the vertical portion of the wall 27 as shown in Figure 2 so that the nipples 20 and 21 rest with the distinguishable compartments or chambers 28 and 29.

The entire unit 23 is bodily removable and provided with appropriate supporting legs which are of an extensible type. Each leg' includes a stationary member 30 and an extensible member 31, the member 31 being held in adjusted position through the medium of a set screw 32.

The burners, of which we provide a plurality, are generally denoted by the numerals 33 and each one comprises a: flame jet pipe- 34 of appropriate dimensions and shape which has its lower end 35 threaded into a fuel mixing sleeve 36 mounted in the heated air circulating duct 8. The sleeve is provided with air intake ports 37, and the gas is allowed to enter the sleeve through the bottom thereof through the medium of a restricted orifice 38.

The upstanding end portions of the flamegas delivery duct and a superposed heated" air circulating duct. By preference the heated air is supplied to the latter duct through the medium of the co-operating branches 9, 10 and 11 in Figure 3.

The cold air intake manifold 14 iscon nected with these branches and by way of the nipples 20 and 21 serves to-bypass the air through the preheating unit 23 before it is allowed to enter the passages formed by said branches 9, 1O and ll. Consequently the air is highly heated before-it passes through the intake portion 37 of the mixing sleeves or members 36, of the burner.-

Manifestly then, by mixing the heatedair with the incoming gas enteringthe burners by way of the orifices 38 the resultant fuel is of a. highly combustible character. As a matter of simplicity the air intake manifold 14 and its nipples-2O and 21'are formed integral or as a part ofthe complete base. Moreover,

' the air preheating unit 23 is made separately in order toenhance manufacturing; advantages as well as to promote easy cleaning of the flue casing or box.

As before stated, the flame jet pipes 34 are arranged in spaced relation around the perimeter of the base and project to elevations above the lower portion of the flue box which is confined in close proximity to the emanating flame.

It is thought that the description taken in connection with the drawings will enable a clear understanding of the invention to be had. Therefore, a more lengthy description is thought unnecessary.

While the preferred embodiment of the invention has been shown and described, it is to be understood that minor changes coming within the field of invention claimed may be resorted to if desired.

We claim:

1. In a burner structure of the class described, a base comprising a hollow casting divided by a horizontal apertured partition intoupper and lower passages, the lower passage constituting a gas delivery duct, the upper passage constitutinga heated air circulating and delivery duct, a plurality of individual burners, each burner comprising an apertured internally threaded sleeve mounted in the air duct and in communication with the gas duct, an upstanding flame jet pipe threaded into said sleeve, a cold air intake manifold provided with valved regulating means at its inlet end, a pair of separated nipples at the opposite end of said manifold, one nipple serving as a cold air discharge and the other nipple as a heated air return, means for conveying the heated air from said return to said air duct, a bodily detachable air preheating unit supported on. said base, the bottom of said unit being provided with spaced openings with which said nipples are in registration to bypass the cold air through the unit so that it may be conveyed to said air duct by way of said air return.

2. In a structure of the class described, a substantially C shaped base comprising a hollow casting of general rectangular cross sectional shape divided by a horizontal apertured. partitiondefining a lower gas circulating and delivery duct, and an upper heated air circulating and delivery duct, a plurality of individual burners, each burner comprising an apertured internally threaded sleeve mounted in the air duct, and in communication with said gas duct, a plurality of tubular distributing branches formed integral with the base and in communication with adjacent portions of said air duct, an air intake manifold formed integral with said base and provided at its intake end with valved air introducing means, a pair of upstanding nipples at the inner end of said manifold, a divider in the manifold separating, said nipples, the inner end portion of said manifold being in communication with said air distributing branches, an air heater comprising a casingprovided with a plurality of airheating fines and extensible legs adapted to rest on said base, the bottom of said casing having spaced'openings with which the aforesaid nipples communicate, said casings being proportioned and arranged with respect to the burners to permit the flame from the burners to impinge against the easing in order to heat said casing, whereby to permit the casing to serve as a preheater for the incoming air before it is supplied to said burner.

3. In a structure of the class described, a base comprising a hollow casting divided by horizontal apertured partitions into upper and lower passages, a plurality of individual burners, each burner comprising an apertured internally threaded sleeve mounted in said upper passage and in communication with said lower passage, an upstanding flame jet threaded into said sleeve, a cold air intake manifold provided with valve regulating means at its inlet end, a pair of separated nipples at the opposite end of said manitold, one nipple serving as a cold air discharge and the other nipple as a heated air return, means for conveying the heated air from said return to said upper passage, a bodily detachable air preheating unit supported on said base, the bottom of said unit being provided with spaced openings with which said nipples are in registration, and a substantially U-shaped partition mounted on the interior of said unit and between said spaced openings to separate the incoming cold air from the outgoing heated air.

4. In a structure of the class described, a substantially C-shaped base comprising a hollow casting of general rectangular crosssectional shape divided by a horizontal apertured partition defining a lower gas circulating and delivery duct, and an upper heated air circulating and delivery duct, a plurality of individual burners, each burner comprising an apertured internally threaded sleeve mounted in the air duct and in communication with said gas duct, a plurality of tubular distributing branches formed integral with the base and in communication with adjacent portions of said air duct, an air intake manifold formed integral with said base and provided at its intake end with valved air introducing means, a pair of upstanding nipples at the inner end of said manifold, a divider in the manifold separating said nipples, the inner end portion of said manifold being in communication with said air distributing branches, an air heater comprising a casing provided with a plurality of air heating fines and extensible legs adapted to rest on said base, the bottom of said casing having spaced openings with which the aforesaid nipples communicate, said casing being proportioned and arranged with respect to the burners to permit the flame from the burners to impinge the casing in order to heat said casing, whereby to permit the casing to serve as a preheater for the incoming air before it is supplied to said burners, and a substantially U-shaped partition mounted in the interior of said 5 casing and between said spaced openings to tures.

ERNEST S. FEDEL. DANIEL D. POTTER. 

